A Dual Platform for Selective Analyte Enrichment and Ionization in Mass Spectrometry Using Aptamer-Conjugated Graphene Oxide

被引:176
作者
Gulbakan, Basri [1 ,2 ]
Yasun, Emir [1 ,2 ]
Shukoor, M. Ibrahim [1 ,2 ]
Zhu, Zhi [1 ,2 ]
You, Mingxu [1 ,2 ]
Tan, Xiaohong [1 ,2 ,3 ]
Sanchez, Hernan [4 ,5 ]
Powell, David H. [1 ,2 ]
Dai, Hongjie [4 ,5 ]
Tan, Weihong [1 ,2 ,3 ]
机构
[1] Univ Florida, Dept Chem, Ctr Res Bio Nano Interface, Gainesville, FL 32611 USA
[2] Univ Florida, Dept Physiol & Funct Gen, Shands Canc Ctr, Gainesville, FL 32611 USA
[3] Hunan Univ, State Key Lab Chemo Biosensing & Chemometrics, Coll Biol, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China
[4] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[5] Stanford Univ, Adv Mat Lab, Stanford, CA 94305 USA
关键词
PLASMA; NANOPARTICLES; CARBON; LONG; MS;
D O I
10.1021/ja109042w
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This study demonstrates the use of aptamer-conjugated graphene oxide as an affinity extraction and detection platform for analytes from complex biological media. We have shown that cocaine and adenosine can be selectively enriched from plasma samples and that direct mass spectrometric readouts can be obtained without a matrix and with greatly improved signal-to-noise ratios. Aptamer-conjugated graphene oxide has clear advantages in target enrichment and in generating highly efficient ionization of target molecules for mass spectrometry. These results demonstrate the utility of the approach for analysis of small molecules in real biological samples.
引用
收藏
页码:17408 / 17410
页数:3
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